Use the units shown. If you leave MCH/MCHC/HCT blank, the calculator may estimate them from related values.
This sample is for demonstration only and may not reflect your lab’s ranges.
| Parameter | Example Value | Unit |
|---|---|---|
| WBC | 7.2 | ×10³/µL |
| RBC | 4.80 | ×10⁶/µL |
| Hemoglobin | 14.1 | g/dL |
| Hematocrit | 42.0 | % |
| MCV | 88 | fL |
| MCH | 29.4 | pg |
| MCHC | 33.6 | g/dL |
| RDW | 13.2 | % |
| Platelets | 250 | ×10³/µL |
| Neutrophils | 55 | % |
| Lymphocytes | 33 | % |
| Monocytes | 7 | % |
| Eosinophils | 3 | % |
| Basophils | 1 | % |
- Hematocrit estimate (if blank):
HCT(%) ≈ RBC(×10⁶/µL) × MCV(fL) ÷ 10 - MCH (if blank):
MCH(pg) = Hemoglobin(g/dL) × 10 ÷ RBC(×10⁶/µL) - MCHC (if blank):
MCHC(g/dL) = Hemoglobin(g/dL) × 100 ÷ HCT(%) - Absolute differential counts:
Absolute(×10³/µL) = WBC(×10³/µL) × Percent ÷ 100 - NLR:
NLR = ANC ÷ ALC - PLR:
PLR = Platelets(×10³/µL) ÷ ALC(×10³/µL)
- Select the profile that best matches the report.
- Enter values exactly as shown on the CBC printout.
- Add differential percentages to compute absolute counts.
- Click Analyze to see flags and notes.
- Use download buttons to export your latest summary.
CBC Purpose
A complete blood count supports rapid screening of oxygen‑carrying capacity, inflammation or infection signals, and clotting potential. This analyzer organizes common parameters into a clear checklist and highlights values that may merit follow‑up. It is designed for quick review in clinics, telehealth, and study settings. Results should be interpreted with symptoms, history, hydration status, pregnancy, altitude, and your laboratory’s methods.
Key Inputs
Inputs cover white cells, red cells, platelets, and red‑cell indices typically printed on reports. Each field shows the expected unit so entries match the report and comparisons stay consistent. Optional differential percentages allow the tool to compute absolute neutrophil and lymphocyte counts, which are often more useful than percentages alone. If hematocrit, MCH, or MCHC are missing, the calculator estimates them from related values. An example table below illustrates typical adult values and helps confirm correct formatting.
Derived Indices
Key derived measures include ANC, ALC, and the neutrophil‑to‑lymphocyte ratio. ANC is calculated as WBC multiplied by neutrophil percent, divided by one hundred, and helps assess neutropenia risk. Absolute monocytes, eosinophils, and basophils are also computed when percentages are provided. NLR is computed by dividing ANC by ALC and can summarize inflammatory balance in some contexts. PLR is shown when platelets and ALC are available.
Reference Logic
The interpretation notes summarize common patterns: low hemoglobin with low MCV suggests microcytosis, while high MCV may indicate macrocytosis, prompting targeted tests such as ferritin, B12, or folate when clinically appropriate. RDW helps differentiate mixed or evolving processes. Platelet trends are included, since thrombocytopenia can raise bleeding concern and thrombocytosis can be reactive. Simple checks warn if percentages fall outside 0–100 or if the differential total is far from 100%.
Exports and Use
Flagging uses typical adult and pediatric intervals and marks each item as low, normal, or high. Because ranges vary by analyzer and population, these intervals are baseline comparisons, not diagnoses. When pregnancy is selected, hemoglobin and hematocrit lower limits are modestly adjusted and the WBC upper limit is widened. For documentation, export CSV or a single‑page PDF of the latest analysis, generated from your most recent session. Share outputs responsibly and seek clinical care for urgent symptoms.
FAQs
What units should I use for entering CBC values?
Use the same units shown on your report. WBC and platelets are commonly in ×10³/µL, RBC in ×10⁶/µL, hemoglobin in g/dL, hematocrit in percent, and indices in fL or pg.
Why does the analyzer show “Derived” next to some rows?
Derived items are calculated from your inputs, such as ANC from WBC and neutrophil percent, or MCHC from hemoglobin and hematocrit. They help summarize trends when your report omits calculated fields.
What if my differential percentages do not add up to 100?
Small rounding differences are common, but large gaps may indicate missing categories or entry errors. The form alerts you when the total is far from 100% so you can recheck the report.
Are the reference ranges always accurate for my lab?
No. Ranges vary by laboratory instruments, population, and clinical context. Treat the displayed intervals as baseline guidance and compare against the reference interval printed on your own CBC report.
How do CSV and PDF downloads work?
After you analyze results, the calculator stores the latest summary in your session. The download buttons export that most recent table and notes as CSV for spreadsheets or as a simple, printable PDF.
Can this replace a clinician’s interpretation?
No. This tool provides educational pattern checks and flags only. If you have severe symptoms, very abnormal values, or pregnancy concerns, seek professional medical advice promptly.